Petoskey Stones, the state stone of Michigan, are fossilized coral resulting from glaciation and are often polished to reveal the beautiful pattern of the 6 sided coral colonies. Only found in Lake Michigan off Petoskey, Michigan
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Petoskey Stones are the fossilized remains of a coral that grew in Michigan 350 million years ago. Petoskey means "rays of rising sun" in Indian. Oh gosh I saw so many of these when I lived Up North Michigan
Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized coral, Hexagonaria percarinata. They are fragments of a coral reef that was originally deposited during the Devonian period, about 350 million years ago.